1 files changed, 33 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/entry/commands.rb b/lib/gitlab/ci/config/entry/commands.rb
new file mode 100644
index 00000000000..65d19db249c
--- /dev/null
+++ b/lib/gitlab/ci/config/entry/commands.rb
@@ -0,0 +1,33 @@
+module Gitlab
+  module Ci
+    class Config
+      module Entry
+        ##
+        # Entry that represents a job script.
+        #
+        class Commands < Node
+          include Validatable
+
+          validations do
+            include LegacyValidationHelpers
+
+            validate do
+              unless string_or_array_of_strings?(config)
+                errors.add(:config,
+                           'should be a string or an array of strings')
+              end
+            end
+
+            def string_or_array_of_strings?(field)
+              validate_string(field) || validate_array_of_strings(field)
+            end
+          end
+
+          def value
+            Array(@config)
+          end
+        end
+      end
+    end
+  end
+end